All he said was 'I'd take 10% drop over 100 dungeon quota because the odds of ME being the guy doing 100+ runs is low". That's not gamblers falacy at all. That's just going with odds in your favor. The vast majority of players would get their drops in way under 100 runs. Complete misapplication of gamblers falacy. That would be the same as "I'm planning on going to the casino and loosing money because that's the more likely outcome". That's just a statement of statistical fact.